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DAVID NATAN

CIK 1253108 · CEO · last filed 2026-08-11

DAVID NATAN is a CEO who has filed 31 SEC Form 4 insider transactions across 11 companies since 2007. The most recent filing, for SBFM, was dated Aug 11, 2026. Across all open-market trades the lifetime net is −$1.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.3M across reported positions. 2 SEC filings were submitted jointly with Black Ridge Oil & Gas, Inc.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$1.31M

Companies

11

Total Filings

31

Lifetime Open-Market Net

-$1.53M

Filer Profile

Reported Address
6720 NW 74TH COURT
PARKLAND, FL 33067
Related Filers
Black Ridge Oil & Gas, Inc. — 2 joint filings, latest 2026-04-01
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
SBFM Director 68,300 $1.06 $72.4K $0 1 2026-08-11
QUCY Director 137,141 $1.34 $183.8K $0 4 2026-08-06
FIEE Director 248,792 $3.96 $985.2K $0 1 2026-05-07
SBFMW Director 100,000 $0.03 $3.1K $0 1 2026-04-14
SOWG Director 18,458 $3.34 $61.6K $0 1 2026-04-01
INDP Director — $2.77 — $0 1 2026-01-22
Bio Green Med Solution, Inc. (CYCCP) Delisted Director 100,000 $5.05 $505.0K $0 2 2025-02-28
FiEE, Inc. (MINM) Delisted Director 146,792 $3.61 $529.9K $0 2 2024-10-01
OPGEN INC (OPGN) Delisted Director 10,000 $24.75 $247.5K $0 1 2024-04-12
TITAN PHARMACEUTICALS INC (TTNP) Delisted Director 3,312 $4.61 $15.3K $0 3 2023-10-26
PharmaNet Development Group Inc (PDGI) Delisted Former EVP 7,766 — — -$1.53M 6 2007-12-12

Recent Filings

31 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-11 SBFM Grant (A) +58,300 $0 EDGAR
2026-08-06 QUCY Grant (A) — $0 EDGAR
2026-08-06 QUCY Grant (A) — $0 EDGAR
2026-08-04 QUCY Grant (A) — $0 EDGAR
2026-05-21 QUCY Grant (A) +137,141 $0 EDGAR
2026-05-07 FIEE Grant (A) +100,000 $0 EDGAR
2026-04-14 SBFMW Grant (A) +100,000 $0 EDGAR
2026-04-01 SOWG Grant (A) +276,876 $128.8K EDGAR
2026-01-22 INDP Grant (A) — $0 EDGAR
2025-02-28 Bio Green Med Solution, Inc. (CYCCP) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 31
Page 1 of 4
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.